A black hole is a massive, compact and superdense object. Therefore, a coin-sized black hole will have a greater mass than the mass of the Earth. Due to the fact that so much mass is packed into such a small size, the gravity near this black hole will be billions of times greater than the gravity of our planet. Such a big difference in tidal forces will tear everything nearby, literally into atoms.
Gravitational attraction extends to the entire universe, where gravity weakens with distance. It is thanks to gravity that we can observe the Sun every day, the Moon affects the tides and we are not carried away into space from the Earth's surface. At the same time, we feel gravity quite evenly due to such a large size of our planet in comparison with us.
However, the gravitational field of a small black hole will be so different for us at different distances from it that if we stand with our feet on such a black hole, the attraction at the feet will be many times stronger than at the head. Such strong gravity will simply tear us apart into billions of tiny pieces.
But the black hole will not stop at us and the objects around us. Now the black hole will dominate the Earth-Moon-black hole gravitational system. Since the Earth is somehow comparable in mass to such a black hole, then these two objects will begin to move towards a common center of mass, located practically in the center of the planet.
Since the Earth, unlike a black hole, does not have the shape of an absolutely symmetrical ideal ball, the black hole will not go straight to the center of the planet, but will begin to rotate the Earth around itself, as it were, like a hoop.
The Earth-black hole system.
So the black hole will begin to swallow our planet from the inside. As a result, the remaining matter of the Earth will be broken into small pieces. These small pieces will revolve around the black hole in the disk, much like the disk of Saturn. However, the rotational energy will be so huge that friction between the particles in the disk will cause them to glow. This phenomenon is called an accretion disk.
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The black hole's strong gravity will make the moon's elliptical orbit even more elongated and change the direction of movement of many nearby asteroids. This will result in the periodic bombardment of the planets of the solar system for the next several million years.
By and large, the solar system will remain in the form in which it is now, except that instead of the earth, a small black hole will now revolve around the sun.